[Role Logic Move] Lift user from Permissions::getPackageInfo

This change modifies the following (private) methods:

- Permissions::getPackageInfo
- Permissions::getFactoryPackageInfo

...by making them multi-user aware. I.e., lift any references to
Process.myUserHandle() out of them into method arguments.

Bug: 302563690
Test: atest CtsRoleTestCases
Change-Id: I746a09d625ccdf1b4e8cef47428a855cf39be563